So I finally got around to properly measuring my bra size. The measurements I got were 29&1/2in underbust and 34in bust. I ordered 30D and 28DD to try.
The 28 band fits better but the DD cups are way to big so I think I need to try 28D. I'm worried, though, because the cups on the 30D seem to be too narrow for me and won't the 28D be even narrower?